Improvement in steam-engines



2 Sheets--Sheet 1.

EZRA NICHOLSON.

Improvement in Steam Engines.

Patented Dec. 12, 1871.

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(150.) 2Sheets--Sheet2.

EZRA NICHOLSON. Improvement-in St eamEngines.

N 121 g1 Patented Dec.12, 187 1.

UNITED STATES PATENT OFFICE.

EZRA NICHOLSON, OF CLEVELAND, OHIO, ASSIGNOR OF TWO-THIRDS OF HIS RIGHTTO CHARLES B. STILWELL AND JOHN J. CLAUSE, OF SAME PLACE.

IMPROVEMENT IN STEAM-ENGINES.

Specification forming part of Letters Patent No. 121,891, dated December12, 1871.

To all whom it may concern:

Be it known that I, Y EZRA NICHOLSON, of Cleveland, in the countyofCuyahoga and State of Ohio, have invented certain Improvements inSteam-Engines, of which the following is a specification:

The first part of my invention relates to the construction of apractical steamengine in such manner that the cost of manufacture shallbe small, the operation of the machine simple in all its parts, and thewearing parts so arranged as to make it next to impossible to get out oforder. The second part of my invention relates to the attachment of theengine to a sewing-machine, small lathe, or other light-runningmachinery, in such manner as to require no stand or frame-work otherthan that belonging to the engine and the machine to which the power isapplied.

Figure 1 is a front view of the engine. Fig. 2 is a side view of thesame. Fig. 3 is a front view of the frame of the engine with thecylinder and face-plate or crank-wheel removed. Fig. 4 is a verticalcross-section of Fig. 1. Fig. 5 is a horizontal cross-section throughthe cylinder and yoke or supportingstrap.

A is the frame of the engine, having suitable lugs to a a, by which theengine may be attached to the frame-work of the sewing-machine, lathe,&o. b b are pillars, having the bearings c c for the shaft H, upon whichthe balance-wheel B and crank-wheel F are arranged. I is the front orface of the frame forming the valve-seat, having suitable ports t idrilled or bored to meet the vertical steampassages i, which connectwith the horizontal passages i, to which the steam and exhaust-pipes areattached. C is the cylinder, having solid trunnions ff, one of which isjournaled in the face I of the frame, and the other in a yoke, G, whichis secured to the frame by the lugs g g. A set-screw, f, is arranged ina boss in the yoke G, by which the cylinder is adjusted to compensatefor the wear. The pistonrod D, having a piston-head, D, is connected toa wrist-pin, d, on the crank-wheel, by a suitable connection, E. Thecrank-wheel F is provided with a groove, F, by which it may be connectedto the machinery to be run by a suitable belt.

This engine is designed to drive light machinery, more particularlysewingmachines and light lathes. The advantages are great simplicity andeconomy, and that it is not liable to get out of order. It may also bereadily attached to the frame-work of any light machine, either with orwithout a suitable bracket, and in connection with the different stylesof sewing-machines this great advantage will be apparent.

Having thus described my invention, I claim- 1. The frame A, havingpillars b b, journals 0 c, and ports 2' t" i, when constructed as hereinshown and described.

2. The crank-wheel F, having wrist-pin d and groove F, in combinationwith the engine herein described, as and for the purpose set forth.

3. The combination of the frame A, cylinder C, shaft H, balance-wheel B,and crank-wheel F, when constructed and arranged substantially as setforth.

E. NICHOLSON.

AUG. e. KIEL. 150

